Reference

Prompt Engineering Glossary

Every term you need, with working example prompts and practical notes on when each technique earns its keep.

2 terms starting with "H"

Hallucination

An LLM confidently producing content that sounds plausible but is factually wrong, fabricated, or ungrounded -- a fundamental failure mode of all current generative models.

Applied

Hybrid Search

Retrieval that combines sparse (keyword, BM25) and dense (embedding, semantic) signals, typically fusing their rankings into one list -- beats either alone on most real corpora.